Rapid drainage device for metal hose of MDO longitudinal stretching unit
By installing a stainless steel ball valve at the metal hose interface, a two-way water path is formed and a backup valve is provided, which solves the problem of production downtime caused by water leakage due to metal hose breakage, and realizes a rapid drainage device that can replace water without stopping the machine and maintain stable temperature.
Patent Information
- Application Number
- CN202421926186.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-08-09
AI Technical Summary
During sheet production, damage to the metal hose and leakage can cause fluctuations in the roller surface temperature. In severe cases, it may be necessary to stop the machine for replacement, which can affect the continuity of production.
A stainless steel ball valve is added to each end of the metal hose interface to form a two-way water circuit, and a spare valve is provided. The water flow is controlled by the valves to achieve metal hose replacement without shutting down the machine.
Replace the metal hoses without affecting production, reduce downtime, maintain stable temperature inside the rollers, and ensure continuous production.
Smart Images
Figure CN223550082U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of sheet production equipment, and in particular relates to a rapid drainage device for metal hoses in MDO longitudinal stretching units. Background Technology
[0002] In sheet metal production, the function of MDO (Medium-Density Attachment) is to gradually elongate the sheet wound on the roller surface by using the speed difference between different rollers, thereby achieving longitudinal stretching. During the stretching process, a certain temperature needs to be maintained on the roller surface to prevent sticking. The roller temperature is maintained by heating water. In existing technology, the water channels between rollers are connected in series via flexible metal hoses, such as... Figure 1 As shown. If the metal hose is damaged and leaks water, the roller surface temperature will be affected, and in severe cases, the machine must be stopped to drain the water and replace the hose. Utility Model Content
[0003] The purpose of this utility model embodiment is to provide a quick drainage device for metal hoses in MDO longitudinal stretching units, which can replace metal hoses without stopping the machine, ensuring the continuity of normal production operation.
[0004] The present invention is implemented as follows:
[0005] A rapid drainage device for a metal hose in an MDO longitudinal stretching unit includes two stretching rollers, the water paths of which are connected by a metal hose. It also includes two stainless steel ball valves. The outlet of one stretching roller is connected to a stainless steel ball valve and then to one end of the metal hose. The other end of the metal hose is connected to the other stainless steel ball valve and then to the inlet of the other stretching roller. The water path of the stretching rollers is: one stretching roller to one stainless steel ball valve, then to the metal hose, then to the other stainless steel ball valve, and finally to the other stretching roller.
[0006] Wherein, the horizontal height of one stretching roller is higher than the horizontal height of the other stretching roller.
[0007] It also includes two spare stainless steel ball valves, which are connected in series with the two stainless steel ball valves respectively.
[0008] This utility model embodiment adds a valve to each end of the metal hose interface, enabling the replacement of the metal hose without stopping the machine, minimizing the impact. By closing the valves, the water inside the roller is kept at a constant level, resulting in minimal temperature fluctuations. After the metal hose replacement is completed, the valves are opened to allow the water circuit to continue operating as before, achieving a seamless connection. Attached Figure Description
[0009] Figure 1 This is a structural diagram of a rapid drainage device for metal hoses in an existing MDO longitudinal stretching unit.
[0010] Figure 2 This is a structural diagram of the rapid drainage device for the metal hose of the MDO longitudinal stretching unit. Detailed Implementation
[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0012] The specific implementation of this utility model will be described in detail below with reference to specific embodiments:
[0013] like Figure 2 As shown, a rapid drainage device for a metal hose in an MDO longitudinal stretching unit includes two stretching rollers 1, wherein the water paths of the two stretching rollers are connected through a metal hose 2. It also includes two stainless steel ball valves 3. The outlet of one stretching roller is connected to a stainless steel ball valve and then to one end of the metal hose. The other end of the metal hose is connected to the other stainless steel ball valve and then to the inlet of the other stretching roller. The water path of the stretching roller is from one stretching roller to one stainless steel ball valve, then to the metal hose, then to the other stainless steel ball valve, and finally to the other stretching roller.
[0014] Wherein, the horizontal height of one stretching roller is higher than the horizontal height of the other stretching roller.
[0015] The system also includes two spare stainless steel ball valves, each connected in series with the two standard stainless steel ball valves. Providing spare stainless steel ball valves increases the number of valves, ensuring multiple points of water circuit disconnection. The two valves directly connected to the rollers can be permanently open, requiring less frequent operation and thus extending their service life. This makes the two valves directly connected to the rollers more durable and can be used for extended periods without replacement. If replacement is needed, it can be performed during production line shutdown maintenance at the end of the production cycle, rather than requiring emergency replacement while the production line is running, thus better ensuring the continuity of production line operation.
[0016] To minimize the impact of a damaged metal hose, a stainless steel ball valve is installed at each end of the hose. Before replacing the hose, simply close the inlet valve, wait for all water to flow to the outlet, and then close the outlet valve. The hose can then be removed and replaced directly. During replacement, minimal water loss and temperature fluctuations within the rollers allow production to continue. After replacement, opening the valves restores normal water flow. The entire process is simple, easy to operate, and time-efficient, effectively reducing downtime caused by hose replacement.
[0017] This utility model embodiment adds a valve to each end of the metal hose interface, enabling the replacement of the metal hose without stopping the machine, minimizing the impact. By closing the valves, the water inside the roller is kept at a constant level, resulting in minimal temperature fluctuations. After the metal hose replacement is completed, the valves are opened to allow the water circuit to continue operating as before, achieving a seamless connection.
[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A rapid drainage device for a metal hose in an MDO longitudinal stretching unit, comprising two stretching rollers, wherein the water paths of the two stretching rollers are connected through a metal hose, characterized in that: It also includes two stainless steel ball valves. The outlet of one stretching roller is connected to a stainless steel ball valve and then to one end of a metal hose. The other end of the metal hose is connected to another stainless steel ball valve and then to the inlet of another stretching roller. The water path of the stretching roller is from one stretching roller to one stainless steel ball valve, then to the metal hose, then to another stainless steel ball valve, and finally to another stretching roller.
2. The rapid drainage device for metal hoses in an MDO longitudinal stretching unit according to claim 1, characterized in that: The horizontal height of one stretching roller is higher than the horizontal height of the other stretching roller.
3. The rapid drainage device for metal hoses in an MDO longitudinal stretching unit according to claim 1, characterized in that: It also includes two spare stainless steel ball valves, which are connected in series with the two stainless steel ball valves respectively.